global
North America
United States
South America/Africa
Europe
Eurasia
Africa/Australasia
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Alnus (tree): 8 samples
Standardised estimates are based on the geometric series index (Kerr and Alroy 2023; Carter and Alroy 2024).